English verb conjugation COULD FIB

Regular verb: fib - fibbed - fibbed

Affirmation

Simple form

I could fib
you could fib
he could fib
we could fib
you could fib
they could fib

V-ing form

I could be fibbing
you could be fibbing
he could be fibbing
we could be fibbing
you could be fibbing
they could be fibbing

Perfect

I could have fibbed
you could have fibbed
he could have fibbed
we could have fibbed
you could have fibbed
they could have fibbed

V-ing perfect

I could have been fibbing
you could have been fibbing
he could have been fibbing
we could have been fibbing
you could have been fibbing
they could have been fibbing

Negation

Simple form

I couldn't fib
you couldn't fib
he couldn't fib
we couldn't fib
you couldn't fib
they couldn't fib

V-ing form

I couldn't be fibbing
you couldn't be fibbing
he couldn't be fibbing
we couldn't be fibbing
you couldn't be fibbing
they couldn't be fibbing

Perfect

I couldn't have fibbed
you couldn't have fibbed
he couldn't have fibbed
we couldn't have fibbed
you couldn't have fibbed
they couldn't have fibbed

V-ing perfect

I couldn't have been fibbing
you couldn't have been fibbing
he couldn't have been fibbing
we couldn't have been fibbing
you couldn't have been fibbing
they couldn't have been fibbing

Interrogative form

Simple form

could I fib?
could you fib?
could he fib?
could we fib?
could you fib?
could they fib?

V-ing form

could I be fibbing?
could you be fibbing?
could he be fibbing?
could we be fibbing?
could you be fibbing?
could they be fibbing?

Perfect

could I have fibbed?
could you have fibbed?
could he have fibbed?
could we have fibbed?
could you have fibbed?
could they have fibbed?

V-ing perfect

could I have been fibbing?
could you have been fibbing?
could he have been fibbing?
could we have been fibbing?
could you have been fibbing?
could they have been fibbing?

Interro-negative form

Simple form

couldn't I fib?
couldn't you fib?
couldn't he fib?
couldn't we fib?
couldn't you fib?
couldn't they fib?

V-ing form

couldn't I be fibbing?
couldn't you be fibbing?
couldn't he be fibbing?
couldn't we be fibbing?
couldn't you be fibbing?
couldn't they be fibbing?

Perfect

couldn't I have fibbed?
couldn't you have fibbed?
couldn't he have fibbed?
couldn't we have fibbed?
couldn't you have fibbed?
couldn't they have fibbed?

V-ing perfect

couldn't I have been fibbing?
couldn't you have been fibbing?
couldn't he have been fibbing?
couldn't we have been fibbing?
couldn't you have been fibbing?
couldn't they have been fibbing?

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